assigngcstrongcast.m [plain text]
/*
* Copyright (c) 2010 Apple Inc. All rights reserved.
*
* @APPLE_LLVM_LICENSE_HEADER@
*/
/*
TEST_CONFIG SDK=macosx GC=1
*/
#import <stdio.h>
#import <stdlib.h>
#import <objc/objc-auto.h>
#import "test.h"
int GlobalInt = 0;
#ifdef __cplusplus
extern "C" {
#endif
id objc_assign_global(id val __unused, id *dest __unused) {
GlobalInt = 1;
return (id)0;
}
id objc_assign_ivar(id val __unused, id dest __unused, ptrdiff_t offset __unused) {
GlobalInt = 0;
return (id)0;
}
id objc_assign_strongCast(id val __unused, id *dest __unused) {
GlobalInt = 1;
return (id)0;
}
#ifdef __cplusplus
}
#endif
typedef struct {
void (^ivarBlock)(void);
} StructWithBlock_t;
int main() {
StructWithBlock_t *swbp = (StructWithBlock_t *)malloc(sizeof(StructWithBlock_t*));
__block int i = 10;
// assigning a Block into an struct slot should elicit a write-barrier under GC
swbp->ivarBlock = ^ { ++i; };
if (GlobalInt != 1) {
fail("missing strong cast write-barrier for Block");
}
succeed(__FILE__);
}